RAID, or Redundant Array of Independent Disks, is a technology for keeping data on a number hard disk drives that work together as a single logical unit. The drives can be physical or logical i.e. in the aforementioned case one single drive is divided into independent ones through virtualization software. In any case, identical information is stored on all of the drives and the main benefit of using such a setup is that in the event that a drive breaks down, the data will remain available on the other ones. Using a RAID also improves the overall performance since the input and output operations will be spread among a few drives. There are several kinds of RAID based on how many hard disks are used, whether writing is performed on all of the drives in real time or just on one, and how the info is synced between the hard drives - whether it is written in blocks on one drive after another or all of it is mirrored from one on the others. These factors indicate that the fault tolerance and the performance between the different RAID types can vary.

RAID in Shared Hosting

Our revolutionary cloud hosting platform where all shared hosting accounts are generated employs fast SSD drives as an alternative to the classic HDDs, and they work in RAID-Z. With this setup, multiple hard disks function together and at least one is a dedicated parity disk. Put simply, when data is written on the remaining drives, it is duplicated on the parity one adding an extra bit. This is carried out for redundancy as even if some drive fails or falls out of the RAID for whatever reason, the info can be rebuilt and verified using the parity disk and the data saved on the other ones, therefore absolutely nothing will be lost and there will not be any service disorders. This is another level of protection for your info together with the revolutionary ZFS file system which uses checksums to make sure that all of the data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Hosting

The RAID type which we employ for the cloud Internet hosting platform where your semi-dedicated hosting account shall be created is known as RAID-Z. What's different about it is that at least 1 of the disks is used as a parity drive. Simply put, whenever any kind of data is duplicated on this particular disk drive, one more bit is added to it and in case a defective disk is replaced, the info that will be duplicated on it is a combination of the data on the remaining drives in the RAID and that on the parity one. This is done to ensure that the info is intact. During this process, your websites will be functioning normally because RAID-Z allows for a whole drive to fail without any service disruptions and it simply uses one of the remaining ones as the main production drive. Using RAID-Z together with the ZFS file system which uses checksums to warrant that no data can get silently corrupted on our servers, you'll never need to worry about the integrity of your files.